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<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<style type="text/css">
body{background-attachment: fixed;
    background-image: url("bg.jpg");
    background-position: right top;
    background-repeat: no-repeat;}
</style>
</head>

<body>
<div style="height:2000px;">
<?php 
$url = '<a href="http://www.baidu.com">中国百度</a>';
preg_match("/<a[\s]+href=\"(.*)\">(.*)<\/a>/",$url,$url_arr);
echo $url_arr[0];
echo "<hr>";
echo $url_arr[1];
echo '<hr>';
echo $url_arr[2];
?>
</div>

<script> 
a=62; 
function encode() { 
 var code = document.getElementById('code').value; 
 code = code.replace(/[ ]+/g, ''); 
 code = code.replace(/'/g, "\'"); 
 var tmp = code.match(/(w+)/g); 
 tmp.sort(); 
 var dict = []; 
 var i, t = ''; 
 for(var i=0; i<tmp.length; i++) { 
 if(tmp[i] != t) dict.push(t = tmp[i]); 
 } 
 var len = dict.length; 
 var ch; 
 for(i=0; i<len; i++) { 
 ch = num(i); 
 code = code.replace(new RegExp('\b'+dict[i]+'\b','g'), ch); 
 if(ch == dict[i]) dict[i] = ''; 
 } 
 document.getElementById('code').value = "eval(function(p,a,c,k,e,d){e=function(c){return(c<a?'':e(parseInt(c/a)))+((c=c%a)>35?String.fromCharCode(c+29):c.toString(36))};if(!''.replace(/^/,String)){while(c--)d[e(c)]=k[c]||e(c);k=[function(e){return d[e]}];e=function(){return'\\w+'};c=1};while(c--)if(k[c])p=p.replace(new RegExp('\\b'+e(c)+'\\b','g'),k[c]);return p}(" 
 + "'"+code+"',"+a+","+len+",'"+ dict.join('|')+"'.split('|'),0,{}))"; 
}

function num(c) { 
 return(c<a?'':num(parseInt(c/a)))+((c=c%a)>35?String.fromCharCode(c+29):c.toString(36)); 
}

function run() { 
 eval(document.getElementById('code').value); 
}

function decode() { 
 var code = document.getElementById('code').value; 
 code2 = code.replace(/^eval/, ''); 
 //alert(code);
 document.getElementById('code').value = eval(code2); 
} 
</script>

<textarea id=code cols=80 rows=20>
</textarea>

 
<input type=button onclick=encode() value=编码> 
<input type=button onclick=run() value=执行> 
<input type=button onclick=decode() value=解码>
</body>
</html>
